Doctors often use glutathione cautiously for things like skin whitening
Skin color is influenced by a number of intrinsic factors, including skin types and genetic background, and extrinsic factors, including the degree of sunlight exposure and environmental pollution (2-4)
This accessibility gap is the most immediate factor for most researchers choosing between the two
Its primary mechanism is increasing VEGF expression (vascular endothelial growth factor), which promotes new blood vessel growth at injury sites
NAC is generally more affordable and effective at boosting glutathione indirectly
While a causal relationship has not been established, patients with depression or other psychiatric conditions should be monitored for changes in mood or behavior, particularly during the initial weeks of treatment or following dose adjustments